package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        String md5Password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!md5Password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void editPassword(PasswordEditDTO passwordEditDTO) {  //员工修改密码
        //得到新旧密码的加密值
        String oldPassword = DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes());
        String newPassword = DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes());
        employeeMapper.editPassword(passwordEditDTO.getEmpId(), oldPassword, newPassword);

    }

    @Override
    public PageResult page(EmployeePageQueryDTO epq) {  //员工分页查询
        //设置分页参数
        PageHelper.startPage(epq.getPage(), epq.getPageSize());
        //查询数据
        List pageList = employeeMapper.page(epq.getName(), epq.getPage(), epq.getPageSize());
        //封装返回
        Page pageResult = (Page) pageList;
        return new PageResult(pageResult.getTotal(), pageResult.getResult());
    }


    //员工新增
    @Override
    public void save(EmployeeDTO employeeDTO) {
        //补全信息
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setStatus(StatusConstant.ENABLE);
        employeeMapper.insert(employee);

    }

    @Override
    public Employee getById(Long id) {   //员工id查询
        return employeeMapper.get(id);
    }

    @Override
    public void edit(EmployeeDTO employeeDTO) {   //员工信息修改
        //补全信息
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        employeeMapper.update(employee);
    }

    @Override
    public void permission(Integer status, Long id) {
        Employee employee = new Employee();
        employee.setStatus(status);
        employee.setId(id);
        employeeMapper.update(employee);
    }


}
